1995 S10, 2.2 4cyl, 5 speed. the truck starts first crank, idles fine, takes off normal, runs like crap under the load of normal driving when I get to a steady RPM,and runs fine at WOT. It feels like a fule issue but I dont really know. I have a fuel cell in it with an inline pump and both are like brand new. new fuel filter, new plugs and wires, new muffler. The problem started last summer and after a long break from working on it I decided to try to figure this problem out. I originally thought it was vapor lock cause I didnt have a vent hole in teh fuel cell cap but today I drove it with the cap loose and it didnt help at all. does anyone have any idea what could be my problem? besides the fact its a POS 2.2 4cyl